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</a></div> <!----></nav>  <ul class="sidebar-links"><li><a href="/resume/" aria-current="page" class="sidebar-link">我要写简历</a></li><li><a href="/resume/zhangqiuyi.html" class="sidebar-link">张秋怡-优秀简历</a></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h1 id="蒋敬敏"><a href="#蒋敬敏" class="header-anchor">#</a> 蒋敬敏</h1> <p>面试过的公司：</p> <table><thead><tr><th>面试时间</th> <th>公司名称</th> <th>地址</th> <th>通勤时长</th> <th>工商信息</th> <th>备注</th></tr></thead> <tbody><tr><td>2021-11-24 17:16 周三</td> <td>智联，做考试系统</td> <td>望京阜通站，首开广场</td> <td>39min</td> <td></td> <td>打电话直接问的</td></tr> <tr><td>2021-11-24 15:00 周三</td> <td>达闼机器人，25-30K</td> <td>望京东，望京 SOHO T3 B 座 33 层</td> <td>35min</td> <td>B 轮，2020-09-27</td> <td>网路部，一个前端</td></tr> <tr><td>2021-11-15 16:00 周一</td> <td>白龙马，15-26K·15 薪</td> <td>望京东，望京国际研发园</td> <td>34min</td> <td>2019-04-23</td> <td>视频</td></tr> <tr><td>2021-11-12 14:00 周四</td> <td>喜屏传媒（北京），20-22K</td> <td>望京东，望京 SOHO T2 c-810</td> <td>33min</td> <td>B 轮，2019-09-10</td> <td>回答还可以</td></tr> <tr><td>2021-11-12 10:00 周四</td> <td>乐普数字医疗（北京），20-35K·14 薪</td> <td>知春路，京仪科技孵化器 105</td> <td>1h15min</td> <td>法人独资，2021-06-18</td> <td>没回答上来</td></tr></tbody></table> <p>心仪的公司：</p> <table><thead><tr><th>技术栈</th> <th>公司名称</th> <th>地址</th> <th>通勤时长</th> <th>工商信息</th> <th>备注</th></tr></thead> <tbody><tr><td>React、Vue（Weex/React Native）</td> <td>躺平设计家，20-35K·16 薪</td> <td>望京东，金辉大厦 39 层</td> <td>22 分钟</td> <td>D 轮，100-499，家装设计</td> <td>阿里巴巴投资</td></tr> <tr><td>React</td> <td>蓝湖，18-35K·13 薪</td> <td>望京东，望京 SOHO</td> <td>35 分钟</td> <td>C 轮，100-499 人，企业服务</td> <td></td></tr> <tr><td>React、小程序</td> <td>泡泡玛特，25-35K·13 薪</td> <td>望京东，浦项中心 A 座 36 层</td> <td>27 分钟</td> <td>已上市，1000-9999 人，新零售</td> <td></td></tr> <tr><td>React、Express、Koa、REST APIS</td> <td>香格里拉，20-35K·15 薪</td> <td>望京，福码大厦</td> <td>29 分钟</td> <td>已上市，10000 人以上，旅游</td> <td></td></tr> <tr><td>Vue、React</td> <td>红松在线，20-40K·14 薪</td> <td>望京东，融科望京中心 19 层</td> <td>29 分钟</td> <td>2020-05-13，在线教育（中老年）</td> <td></td></tr> <tr><td>Vue、小程序</td> <td>红布林，20-35K·13 薪</td> <td>东湖渠，启明国际大厦</td> <td>42 分钟</td> <td>B 轮，500-999，电子商务，2018</td> <td>已投-未回复</td></tr></tbody></table> <h2 id="【010】智联-考试系统"><a href="#【010】智联-考试系统" class="header-anchor">#</a> 【010】智联-考试系统</h2> <p>2021-11- 17:16 周三 面试时长：15min，面试官：技术，打来电话直接问的</p> <p>下午刚面完达闼回到家坐下，就打来电话了，说是智联的，应该是技术人员，问的技术相关问题</p> <ol><li>问上家公司是做什么的，在线教育有没有影响，为什么离职</li> <li>离职后这几个月做什么了</li> <li>在魔力主要负责哪一块儿的项目</li> <li>Vue 和 React 有什么区别？如果来了一个全新的项目，你会如何选择？你觉得从用户角度，能感觉到这两个的性能差异吗？⭐</li> <li>有遇到的项目中对前端性能要求特别高的吗？</li> <li>后台系统中的下载 excel 功能，如果数据量特别大的话如果实现？⭐ 分页的话，如果中间某一次请求失败了怎么处理？</li> <li>有多个项目使用到同一个组件，如何实现？微前端实现原理（qiankun），与 iframe 的区别 ⭐</li> <li>iframe 跨域如何解决？跨域的原因？（浏览器的同源策略）</li> <li>目前的薪资，期望薪资</li> <li>有什么问题问我吗？</li></ol> <h2 id="【009】达闼机器人"><a href="#【009】达闼机器人" class="header-anchor">#</a> 【009】达闼机器人</h2> <p>2021-11-24 16:00 周三 面试时长：1h，面试官：后台兼前端代明、技术负责人、网络部负责人、hr</p> <p>主要做云端机器人，包括机器人大脑、机器人本体，中间网络通信，该部门主要负责网络通信，对于前端的要求</p> <ol><li>已经有一套负责运营机器人的管理平台，已经做了好几年了，后面会做一些优化和新功能，前端是 react 框架</li> <li>后面可能会做外部的产品，主要跟网络相关的运营平台和配置下发的平台，主要是配置下发和网络拓扑的监控图、告警图等，还有拖拽之类的界面功能</li></ol> <p>有三个研发团队：中间网络通信、边缘计算、区块链。每个部门有一个前端，之前是后台兼职负责前端部分。应聘岗位主要负责网络部的 toB 基础设施的前端开发，比如网络、云之类的，嵌套在硬件里面，偏后端。网络部属于内部创业，30 人左右，后续可能会成立公司</p> <p>offer：2021-11-26 16:28 HR 通知可以走 offer 流程了，但是要等一周左右时间，基本工资+5%季度考核+2 个月年终奖+全额社保公积金 2%</p> <h3 id="_1-技术面-16min"><a href="#_1-技术面-16min" class="header-anchor">#</a> 1. 技术面（16min）</h3> <p>一个在现场，一个语音</p> <ol><li><p>自我介绍</p></li> <li><p>灰度优化是怎么做的？</p></li> <li><p>离职后这几个月做什么了？</p></li> <li><p>我看最后一家公司做 H5 的比较多</p></li> <li><p>加载网页时浏览器的渲染流程，js 是在什么时间执行的？⭐</p></li> <li><p>http 协议里的 Cookie 有什么用途？Cookie 跟跨站攻击（XSS）有什么关系？⭐</p></li> <li><p>第一家公司做的关系图是什么类型的图？公司的组织结构图</p></li> <li><p>let、const 与 var 有什么区别？对 for 循环里做闭包有什么影响？</p></li> <li><p>是否有学历学位证，及成人教育相关问题</p></li> <li><p>你有什么问题吗？</p></li></ol> <h3 id="_2-hr-面-19min"><a href="#_2-hr-面-19min" class="header-anchor">#</a> 2. HR 面（19min）</h3> <ol><li>学历问题，是否有学历学历证书</li> <li>是否离职</li> <li>离职原因</li> <li>现在找工作比较关注什么？</li> <li>期望薪资是底线吗？</li> <li>为什么没有留在创业经理的公司？</li> <li>哪儿的人？哪年的？</li> <li>个人想要了解技术方面的，H5、Vue 和 React 的关系</li> <li>个人规划是怎样的？</li> <li>用什么样的方式技术积累</li> <li>是否其他 offer</li> <li>一直学技术不会觉得枯燥吗</li> <li>你现在是属于自己的一个状态是吗？（是否结婚）</li> <li>是否结婚？是否有生孩子的计划</li></ol> <h3 id="_3-团队负责人面-9min"><a href="#_3-团队负责人面-9min" class="header-anchor">#</a> 3. 团队负责人面（9min）</h3> <ol><li>自我介绍</li> <li>在线教育没有受影响吗？离职后做什么了</li> <li>离职原因</li> <li>未来 3 年 5 年后的规划或想法 ⭐</li> <li>平时学习的方式</li> <li>然后他介绍了一下公司的情况</li></ol> <h2 id="【008】白龙马云行科技"><a href="#【008】白龙马云行科技" class="header-anchor">#</a> 【008】白龙马云行科技</h2> <p>2021-11-15 16:00 周一 钉钉视频面试时长：1.5h，面试官：李阳阳（高级前端工程师）</p> <ol><li><p>自我介绍</p></li> <li><p>版本更新和灰度优化方案具体是怎样的，自己做了哪些工作（介绍中提到的）</p></li> <li><p>介绍中说 2 年 vue1 年 react，剩下的时间做什么了</p></li> <li><p>简历上写的负责人指的只是这两个项目的负责人吗</p></li> <li><p>是否带过团队？如何带新同事，做了哪些工作，如果保证上线前代码没问题（codeview）</p></li> <li><p>如何做页面布局</p></li> <li><p>介绍一下 flex，常用属性有哪些，缩放变形 等</p></li> <li><p>医保录入系统的响应式是如何做的</p></li> <li><p>用 flex 实现 div1 居中，div2 居右</p></li> <li><p>说一下深浅拷贝，如何实现</p></li> <li><p>如何判断数据类型？主要是判断对象、数组或函数</p></li> <li><p>遍历的方法有哪些，区别</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token punctuation">[</span><span class="token string">&quot;1&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;2&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;3&quot;</span><span class="token punctuation">]</span><span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>parseInt<span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// [1, NaN, NaN]</span>
</code></pre></div></li> <li><p>实现数组里相加等于 13 的 index 及个数</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token function">findIndex</span><span class="token punctuation">(</span><span class="token parameter">arr<span class="token punctuation">,</span> num</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
 <span class="token comment">// 求出arr数组中两两相加为num的数据的下标</span>
<span class="token punctuation">}</span>
<span class="token function">findIndex</span><span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">,</span> <span class="token number">9</span><span class="token punctuation">,</span> <span class="token number">4</span>， <span class="token number">7</span>， <span class="token number">22</span>， <span class="token number">0</span>， <span class="token number">2</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token number">13</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre></div></li> <li><p>事件循环机制</p></li> <li><p>给了一段代码，分析打印结果（for 循环会不会阻塞 js 执行）、宏任务和微任务，执行栈（先进先出）、任务队列</p> <div class="language-js extra-class"><pre class="language-js"><code>console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">setTimeout</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
  console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  Promise<span class="token punctuation">.</span><span class="token function">resolve</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">8</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">20</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">let</span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> i <span class="token operator">&lt;</span> <span class="token number">100000000</span><span class="token punctuation">;</span> i<span class="token operator">++</span><span class="token punctuation">)</span> <span class="token punctuation">{</span><span class="token punctuation">}</span>
<span class="token keyword">new</span> <span class="token class-name">Promise</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">resolve<span class="token punctuation">,</span> reject</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
  console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">4</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token function">resolve</span><span class="token punctuation">(</span><span class="token number">5</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">data</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
  console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>data<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">setTimeout</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
  console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">6</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">7</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token comment">// 1 4 7 5 2 8 3 6</span>
</code></pre></div></li> <li><p>说一下 Vue</p></li> <li><p>Vue 和 React 的区别及实现原理</p></li> <li><p>React Hooks 与 Class 区别</p></li> <li><p>发布订阅和观察者模式的区别</p></li> <li><p>做过的比较难的项目（升阶中的挽留弹窗）</p></li> <li><p>有了解过单例模式吗？都有哪些设计模式？</p></li> <li><p>周末或空闲时间在学什么</p></li> <li><p>未来的职业规划</p></li></ol> <h2 id="【007】喜屏传媒"><a href="#【007】喜屏传媒" class="header-anchor">#</a> 【007】喜屏传媒</h2> <p>2021-11-12 14:00 周四 现场</p> <p>技术面：技术总监很 nice，直接切入正题，总结面试题。因为说了主要做 vue 和小程序比较多，所以问了关于 vue 的比较多</p> <ol><li><p>Vue 的底层原理</p></li> <li><p>生命周期</p></li> <li><p>对 MVVM 的理解</p></li> <li><p>CSS 权重优先级</p></li> <li><p>从输入 url 到页面显示的过程</p></li> <li><p>对 http 了解多少，三次握手、四次挥手</p></li> <li><p>虚拟 DOM 是如何提升性能的</p></li> <li><p>从哪些方面优化页面加载慢的问题</p></li> <li><p>什么是防抖和节流？应用场景</p></li> <li><p>本地存储的作用、优缺点、应用场景</p> <p>面试官总结：优先级 Cookie、sessionSorage、localStorage</p> <p>localStorage：同源窗口中共享</p> <p>sessionStorage：浏览器窗口关闭</p> <p>Cookie：http、url</p></li> <li><p>uni-app 优缺点、应用场景</p></li> <li><p>平时用什么抓包工具</p></li> <li><p>跨浏览器问题：H5 如何拉起小程序、微信或者 app 等</p></li> <li><p>CSS 样式调试能力如何</p></li> <li><p>有没有带过团队？</p></li></ol> <p>HR 面（其实是个财务）：</p> <ol><li>住在哪儿</li> <li>上家公司做什么的，工资多少，期望薪资</li> <li>离职原因</li> <li>转行原因</li> <li>上家公司工作强度大吗</li> <li>接下来找工作有没有行业啊，自己的规划之类的</li> <li>薪资最低能接受多少（社保公积金不是全额）</li></ol> <h2 id="【006】乐普数字医疗"><a href="#【006】乐普数字医疗" class="header-anchor">#</a> 【006】乐普数字医疗</h2> <p>2021-11-12 10:00 周四 现场面试时长：10min</p> <ol><li>url 输入后发生了什么</li> <li>说一下跨域，有哪些跨域方式：cors，jsonp</li> <li>webpack 有哪些配置，有哪些 loader 和 plugin</li> <li>vue 生命周期，父子组件传值</li> <li>react hooks 优点</li> <li>事件循环机制</li> <li>性能优化</li> <li>css 布局：左侧固定有哪些实现方式</li> <li>rem,em,vw,vh 区别</li> <li>webpack 是否配置过 rem</li> <li>flex 常用属性，flex 三个组合值分别代表什么</li> <li>本地存储：三个区别，打开多个标签页可以共享吗</li> <li>uniapp 和 taro 区别</li> <li>做过地图没</li> <li>深浅拷贝</li></ol> <h2 id="【005】魔力耳朵-2020"><a href="#【005】魔力耳朵-2020" class="header-anchor">#</a> 【005】魔力耳朵（2020）</h2> <p>2020 年 11 月 25 日下午 面试官：高级前端 叶飞 时长：44min</p> <ol><li><p>先做下自我介绍</p></li> <li><p>Canvas 跨域问题如何解决？</p> <ol><li>给 img 添加 crossorigin：<code>img.setAttribute('crossOrigin', 'Anonymous');</code></li> <li>微信头像有时候会生成失败，url 后加上时间戳之后就好了</li> <li>将 img 地址修改为同源域名</li></ol></li> <li><p>用 localstorage 具体承担了什么角色？</p></li></ol> <p>这里主要考察本地存储 localstorage 、sessionstorage 和 cookie 的不同和应用场景。</p> <p>主要是存储了房源的 id，这里其实用 sessionstorage 或者直接带在 url 上更好</p> <ol start="4"><li>小程序用户授权是怎样一个流程呢？</li></ol> <p><a href="https://developers.weixin.qq.com/miniprogram/dev/api/open-api/user-info/wx.getUserProfile.html" target="_blank" rel="noopener noreferrer">wx.getUserProfile | 微信开放文档<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <p>2021 年 4 月 28 之前是 getUserInfo，现改为 wx.getUserProfile，但没有 openid 和 unionid，可以直接从 wx.login 中获取</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token comment">// 以前是用getUserInfo</span>
<span class="token operator">&lt;</span>button open<span class="token operator">-</span>type<span class="token operator">=</span><span class="token string">&quot;getUserInfo&quot;</span> bindgetuserinfo<span class="token operator">=</span><span class="token string">&quot;bindGetUserInfo&quot;</span><span class="token operator">&gt;</span>授权登录<span class="token operator">&lt;</span><span class="token operator">/</span>button<span class="token operator">&gt;</span>

wx<span class="token punctuation">.</span><span class="token function">getUserInfo</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    <span class="token function-variable function">success</span><span class="token operator">:</span> <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">res</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>res<span class="token punctuation">.</span>userInfo<span class="token punctuation">)</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token function">bindGetUserInfo</span> <span class="token punctuation">(</span><span class="token parameter">e</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
 console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>e<span class="token punctuation">.</span>detail<span class="token punctuation">.</span>userInfo<span class="token punctuation">)</span>
<span class="token punctuation">}</span>
userInfo<span class="token operator">:</span> <span class="token punctuation">{</span>
  <span class="token string">&quot;openId&quot;</span><span class="token operator">:</span> <span class="token string">&quot;OPENID&quot;</span><span class="token punctuation">,</span>
  <span class="token string">&quot;nickName&quot;</span><span class="token operator">:</span> <span class="token string">&quot;NICKNAME&quot;</span><span class="token punctuation">,</span>
  <span class="token string">&quot;gender&quot;</span><span class="token operator">:</span> <span class="token constant">GENDER</span><span class="token punctuation">,</span>
  <span class="token string">&quot;city&quot;</span><span class="token operator">:</span> <span class="token string">&quot;CITY&quot;</span><span class="token punctuation">,</span>
  <span class="token string">&quot;province&quot;</span><span class="token operator">:</span> <span class="token string">&quot;PROVINCE&quot;</span><span class="token punctuation">,</span>
  <span class="token string">&quot;country&quot;</span><span class="token operator">:</span> <span class="token string">&quot;COUNTRY&quot;</span><span class="token punctuation">,</span>
  <span class="token string">&quot;avatarUrl&quot;</span><span class="token operator">:</span> <span class="token string">&quot;AVATARURL&quot;</span><span class="token punctuation">,</span>
  <span class="token string">&quot;unionId&quot;</span><span class="token operator">:</span> <span class="token string">&quot;UNIONID&quot;</span><span class="token punctuation">,</span>
  <span class="token string">&quot;watermark&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token string">&quot;appid&quot;</span><span class="token operator">:</span><span class="token string">&quot;APPID&quot;</span><span class="token punctuation">,</span>
    <span class="token string">&quot;timestamp&quot;</span><span class="token operator">:</span><span class="token constant">TIMESTAMP</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
<span class="token comment">// 现在调整为 wx.serProfile</span>
<span class="token operator">&lt;</span>button bindtap<span class="token operator">=</span><span class="token string">&quot;getUserProfile&quot;</span><span class="token operator">&gt;</span> 获取头像昵称 <span class="token operator">&lt;</span><span class="token operator">/</span>button<span class="token operator">&gt;</span>
<span class="token function">getUserProfile</span><span class="token punctuation">(</span><span class="token parameter">e</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token comment">// 推荐使用wx.getUserProfile获取用户信息，开发者每次通过该接口获取用户个人信息均需用户确认</span>
    <span class="token comment">// 开发者妥善保管用户快速填写的头像昵称，避免重复弹窗</span>
    wx<span class="token punctuation">.</span><span class="token function">getUserProfile</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
      desc<span class="token operator">:</span> <span class="token string">'用于完善会员资料'</span><span class="token punctuation">,</span> <span class="token comment">// 声明获取用户个人信息后的用途，后续会展示在弹窗中，请谨慎填写</span>
      <span class="token function-variable function">success</span><span class="token operator">:</span> <span class="token punctuation">(</span><span class="token parameter">res</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
        <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">setData</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
          userInfo<span class="token operator">:</span> res<span class="token punctuation">.</span>userInfo<span class="token punctuation">,</span>
          hasUserInfo<span class="token operator">:</span> <span class="token boolean">true</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
</code></pre></div><ol start="5"><li>Vue Router 为什么能够实现页面无刷新的跳转呢？</li></ol> <p>回答了 vue 使用的是组件的动态加载</p> <p>问：那 jquery 能不能实现这样的一个无刷新的跳转？</p> <p>可以的，里面有个 jQuery.load()，可以直接 load 一个页面</p> <p>问：那为什么 window.location.href 就会整个页面刷新呢？跟 vue router 相比又有什么不同呢？</p> <ol start="6"><li>Vue Router 有哪几种模式？实现无刷新跳转原理</li></ol> <p>history：</p> <p>hash：</p> <p>其实这两种都是什么都没做</p> <ol start="7"><li>Vue 的双向数据绑定是如何实现的？</li></ol> <p>说了 v-model 和 vue3 的区别</p> <p>问：那 vue2.0 的数组怎么办？</p> <p>支持数组的 8 种方法：push、slice、shift、unshift 等，还有$set 可以强制更新数组</p> <p>问：为什么会提供这 8 种方法？又具体都是如何实现双向绑定的？</p> <ol start="8"><li>Dom Diff 是如何实现的？双向数据绑定和 Dom Diff 的区别？</li></ol> <p>加了 dom diff 之后，事件绑定如何绑定的？组件里又是如何绑定的？</p> <p>比如说有三级 dom，我给第二级加了一个 click，它是怎么把这个 click 精准的加到第二级上的</p> <p>考察了事件冒泡的过程</p> <ol start="9"><li>Reat 有了解吗？做过项目吗？有哪些常用的生命周期？</li></ol> <p>用的 hook 方式，没有生命周期，有 usestate、useeffect、usecallback</p> <ol start="10"><li>Vue3.0 都有哪些改变？</li></ol> <p>下面 js 基础部分</p> <ol start="11"><li>说一下 this 指向？普通函数和箭头函数的 this 指向有什么区别？</li></ol> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">const</span> obj1 <span class="token operator">=</span> <span class="token punctuation">{</span>
  <span class="token function-variable function">fn</span><span class="token operator">:</span> <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> obj2 <span class="token operator">=</span> <span class="token punctuation">{</span>
  <span class="token function-variable function">fn</span><span class="token operator">:</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
    console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>
obj1<span class="token punctuation">.</span><span class="token function">fn</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// {fn: ...}</span>
obj2<span class="token punctuation">.</span><span class="token function">fn</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// window</span>
</code></pre></div><p>问：有哪些可以改变 this 指向的方法？</p> <p>call(this, ..., ..., ...)、applay(this, [..., ...,])、bind，new 一个实例</p> <p>问：new 都做了什么？</p> <p>new 一个构造函数，出来的是一个实例，同时也改变了 this 指向，指向现在的这个实例</p> <ol start="12"><li>let、var、const 区别</li></ol> <p>var 声明全局变量，有暂时性死区，可以将变量提升</p> <p>问：let 可以声明一个块级元素吗？块级作用域和函数作用域区别？</p> <p>块级作用域：用大括号括起来的部分</p> <ol start="13"><li>浏览器的事件循环机制（Event Loop）有了解吗？</li></ol> <p>settimeout 和 promise.then 的区别，异步优先级如何？宏任务和微任务有了解吗？</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token function">setTimeout</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
  console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">new</span> <span class="token class-name">Promise</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">resolve</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
  console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token function">resolve</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
  console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">// 输出 3 2 1</span>
</code></pre></div><p>宏任务也是异步的，在事件循环机制里微任务是优先的，主程序走的是同步任务，当主任务完成之后就会把异步任务拉到队列里去，当异步完成之后主任务才会回来执行这个队列</p> <p>问：settimeout 为什么会有执行时间不准的情况？</p> <p>是跟它的事件循环机制有关系的</p> <ol start="14"><li>http 缓存有哪些？</li></ol> <p>强缓存和协商缓存</p> <p>304 状态码是协商缓存：就是服务器告诉你这个资源可以用缓存，然后返回一个 304，然后浏览器就会用前端缓存的资源</p> <ol start="15"><li>常见的状态码有哪些？</li></ol> <h2 id="【004】太极华青-笔试"><a href="#【004】太极华青-笔试" class="header-anchor">#</a> 【004】太极华青 - 笔试</h2> <ol><li><p>js 有几种类型，分别举一个例子</p></li> <li><p>js 中的深浅拷贝，分别写一个实现的例子</p></li> <li><p>js 创建对象的几种方式，分别写一个例子</p></li> <li><p>简单说明什么是原型链</p></li> <li><p>js 有几种实现继承的方式，分别写一个例子</p></li> <li><p>写出一下数组实现对应功能的方法</p></li></ol> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">var</span> arr <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">&quot;12&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;32&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;89&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;12&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;12&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;78&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;12&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;32&quot;</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
</code></pre></div><p>1、数组去重 2、排序</p> <ol start="7"><li><p>简单描述浏览器渲染页面的一般过程</p></li> <li><p>什么是强缓存和协商缓存</p></li> <li><p>为什么最好把 CSS 的 <code>&lt;link&gt;</code> 标签放在 <code>&lt;head&gt;&lt;/head&gt;</code> 之间？为什么最好把 JS 的 <code>&lt;script&gt;</code> 标签恰好放在 <code>&lt;/body&gt;</code> 之前，有例外情况吗？</p></li> <li><p>iframe 框架有哪些优缺点？</p></li> <li><p>什么是白屏时间？如何获取白屏时间？</p></li> <li><p>DOM 和 BOM 有什么区别？</p></li> <li><p>CSS 选择器的优先级是如何计算的？</p></li> <li><p>请阐述 <code>Float</code> 定位的工作原理</p></li> <li><p>有哪些清除浮动的技术？都适用哪些情况？</p></li> <li><p><code>v-if</code> 和 <code>v-show</code> 的区别</p></li> <li><p>vue 怎么实现页面的权限控制？</p></li></ol> <h2 id="【003】京东数字科技"><a href="#【003】京东数字科技" class="header-anchor">#</a> 【003】京东数字科技</h2> <p>2019 年 7 月 11 日 上午 11:00</p> <h3 id="js"><a href="#js" class="header-anchor">#</a> JS</h3> <ul><li>数据类型有哪 5 种，Es6 新加了 Symbol</li> <li>是否会用 Canvas，Echarts 等绘制图表，做过什么</li></ul> <h3 id="数据结构和算法"><a href="#数据结构和算法" class="header-anchor">#</a> 数据结构和算法</h3> <ul><li>数据结构有哪些，空间复杂度</li> <li>拿到后台数据如何判断用堆栈还是数组，复杂度各是多少</li> <li>插入排序、冒泡排序、选择排序 - 现场手写</li> <li>斐波那契数列 - 现场手写</li></ul> <h3 id="vue-相关"><a href="#vue-相关" class="header-anchor">#</a> vue 相关</h3> <ul><li>vue 实现原理</li> <li>observer 订阅模式</li> <li>nuxt 为了解决什么问题</li> <li>watch 和 comuted 区别</li> <li>线上如何启动 vue 项目</li> <li>poxy 代理实现原理</li> <li>遇到的问题及解决方案</li> <li>Webpack 和 express 的区别（具体没听清楚是啥）</li></ul> <h3 id="服务器"><a href="#服务器" class="header-anchor">#</a> 服务器</h3> <ul><li>Tcp 协议，从输入 url 之后的过程</li> <li>http 协议，工作流程，原理</li></ul> <h3 id="其他"><a href="#其他" class="header-anchor">#</a> 其他</h3> <ul><li>对后台语言、数据库了解多少</li> <li>Tab 切换时内容区数据怎么处理，本地缓存过载怎么办</li> <li>浏览器内核了解吗？Css3 动画作品，兼容性怎么处理，用什么插件，提到硬件加速</li> <li>自我介绍</li> <li>技术优势及欠缺，反应最高能力的项目，遇到的问题及解决方式</li> <li>性格优缺点</li> <li>能否接受加班，最大程度是多久，考察抗压能力</li></ul> <hr> <h2 id="【002】大锤资产-2016"><a href="#【002】大锤资产-2016" class="header-anchor">#</a> 【002】大锤资产（2016）</h2> <p>2019 年 7 月 5 日上午 10：30</p> <h3 id="笔试题"><a href="#笔试题" class="header-anchor">#</a> 笔试题</h3> <ol><li>js 去除字符串&quot;1552sdff43,&quot;中最后的逗号（最少两种方法）</li> <li>js 去重，&quot;213agggdhhscgf1558876&quot;</li> <li>js 加逗号，千分位制符，542215444.88=&gt;542,215,444.88</li> <li>操作数组，头部加数据，尾部加数据</li> <li>如何居中 div?如何居中浮动元素？如何居中绝对定位元素？</li> <li>输出结果：</li></ol> <div class="language-js extra-class"><pre class="language-js"><code>console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">1</span> <span class="token operator">+</span> <span class="token string">&quot;2&quot;</span> <span class="token operator">+</span> <span class="token string">&quot;2&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 122</span>
console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">1</span> <span class="token operator">+</span> <span class="token operator">+</span><span class="token string">&quot;2&quot;</span> <span class="token operator">+</span> <span class="token string">&quot;2&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 32</span>
console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token number">1</span> <span class="token operator">+</span> <span class="token operator">-</span><span class="token string">&quot;2&quot;</span> <span class="token operator">+</span> <span class="token string">&quot;2&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// -12</span>
console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">&quot;A&quot;</span> <span class="token operator">-</span> <span class="token string">&quot;B&quot;</span> <span class="token operator">+</span> <span class="token string">&quot;2&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// NaN2</span>
console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">&quot;A&quot;</span> <span class="token operator">-</span> <span class="token string">&quot;B&quot;</span> <span class="token operator">+</span> <span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// NaN</span>
</code></pre></div><ol start="7"><li>iframe（子级获取父级、父级获取子级、平级之间）之间如何传递数据？</li> <li>都用过哪些技术，最熟练的是什么，遇到过哪些棘手问题，怎么解决的？</li></ol> <h3 id="_1-截取字符串的三种方式"><a href="#_1-截取字符串的三种方式" class="header-anchor">#</a> 1. 截取字符串的三种方式</h3> <ul><li><a href="http://www.w3school.com.cn/jsref/jsref_slice_string.asp" target="_blank" rel="noopener noreferrer">str.slice(start,end)<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a> —— 推荐使用</li> <li><a href="http://www.w3school.com.cn/jsref/jsref_substring.asp" target="_blank" rel="noopener noreferrer">str.substring(start,stop)<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li> <li><a href="http://www.w3school.com.cn/jsref/jsref_substr.asp" target="_blank" rel="noopener noreferrer">str.substr(start,length)<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a> —— 反对使用</li></ul> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">let</span> str <span class="token operator">=</span> <span class="token string">&quot;abcdef&quot;</span><span class="token punctuation">;</span>
<span class="token comment">// 0</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// abcdef</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">substring</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// abcdef</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">substr</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// abcdef</span>
<span class="token comment">// 使用一个参数</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// cdef</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">substring</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// cdef</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">substr</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// cdef</span>

<span class="token comment">// 使用两个参数</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// cd</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">substring</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// cd</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">substr</span><span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// cdef</span>

<span class="token comment">// 使用两个负数</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">slice</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// bc</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">substring</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// a #负数转换为0</span>
str <span class="token operator">=</span> str<span class="token punctuation">.</span><span class="token function">substr</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token operator">-</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// ' ' #负数转换为0</span>

<span class="token comment">// 注意：substring() ：如果参数 start 与 stop 相等，那么该方法返回的就是一个空串（即长度为 0 的字符串）。如果 start 比 stop 大，那么该方法在提取子串之前会先交换这两个参数。</span>
</code></pre></div><h3 id="_2-js-去重"><a href="#_2-js-去重" class="header-anchor">#</a> 2. js 去重</h3> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">function</span> <span class="token function">unique</span><span class="token punctuation">(</span><span class="token parameter">arr</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token keyword">return</span> arr<span class="token punctuation">.</span><span class="token function">filter</span><span class="token punctuation">(</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">item<span class="token punctuation">,</span> index<span class="token punctuation">,</span> arr</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token comment">//当前元素，在原始数组中的第一个索引==当前索引值，否则返回当前元素</span>
    <span class="token keyword">return</span> arr<span class="token punctuation">.</span><span class="token function">indexOf</span><span class="token punctuation">(</span>item<span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">===</span> index<span class="token punctuation">;</span>
  <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
</code></pre></div><h2 id="【001】大公国际"><a href="#【001】大公国际" class="header-anchor">#</a> 【001】大公国际</h2> <p>2016-02-12</p> <p>做的面试题，做完有个前端领导又问了一些问题，问完等了半小时，老板是个老头儿，说最多给 6000，然后就没有然后了</p></div> <footer class="page-edit"><!----> <div class="last-updated"><span class="prefix">更新时间:</span> <span class="time">3/25/2022, 7:13:26 PM</span></div></footer> <!----> </main></div><div class="global-ui"><!----></div></div>
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